Drive circuit, display device, and debugging method

Abstract

A drive circuit, a display device, and a debugging method. The drive circuit is coupled to a display panel, the display panel includes a plurality of display regions, and the drive circuit includes a plurality of compensation sub-circuits. The plurality of compensation sub-circuits are coupled to the plurality of display regions in a one-to-one corresponding manner through traces, and each of the compensation sub-circuits is configured to output a voltage determined based on a wire resistance of the trace to the corresponding display region through the traces. The display panel is configured as a plurality of display regions, and each display region is coupled to one drive circuit through one single trace, such that the compensation sub-circuits can apply different voltages to the display regions, and the voltages are determined based on wire resistances of the traces.

What is claimed is: 
     
       1. A drive circuit, applied to a display panel that comprises a plurality of display regions, wherein each of the plurality of display regions is coupled to the drive circuit through one single trace, the drive circuit comprises a plurality of compensation sub-circuits, the plurality of compensation sub-circuits are coupled to the plurality of display regions in a one-to-one corresponding manner through traces, and configured to output voltages determined based on wire resistances of the traces to the corresponding display regions through the traces;
 wherein the plurality of display regions have a same width in the arrangement direction from the display panel to the drive circuit, the wire resistance of the trace between the display region which is closest to the drive circuit, and the corresponding compensation sub-circuit is R 1 , and the voltage outputted by the compensation sub-circuit corresponding to a n-th display region in the arrangement direction is K n *n, wherein K n  is a first proportional coefficient that is corresponding to the n-th display region and related to R 1 ; and 
 wherein the drive circuit further comprises a drive sub-circuit, each compensation sub-circuit comprises a resistor coupled to the trace between the corresponding display region and a drive voltage output terminal of the drive sub-circuit, and a resistance of each resistor is X*Rn/I, wherein X is a second proportional coefficient, Rn is a wire resistance value corresponding to a n-th display region sequentially arranged in a direction away from the drive circuit, and I is a current flowing through the resistor. 
 
     
     
       2. The drive circuit according to  claim 1 , wherein the plurality of display regions are sequentially arranged in an arrangement direction from the display panel to the drive circuit; and
 the voltages outputted by the plurality of compensation sub-circuits to the plurality of display regions decrease gradually along the arrangement direction from the display panel to the drive circuit. 
 
     
     
       3. The drive circuit according to  claim 1 , wherein the drive sub-circuit comprises:
 a first switch, wherein a control terminal and an input terminal of the first switch serve as a drive control signal input terminal and a data input terminal of the drive sub-circuit respectively; 
 a second switch, wherein an output terminal of the second switch is coupled to the plurality of compensation sub-circuits; and 
 a capacitor, wherein one terminal of the capacitor is coupled to an input terminal of the second switch to serve as the drive voltage output terminal of the drive sub-circuit, and the other terminal of the capacitor is coupled to an output terminal of the first switch and a control terminal of the second switch. 
 
     
     
       4. The drive circuit according to  claim 3 , wherein one terminal of the resistor is coupled to the corresponding display region, and the other terminal of the resistor is coupled to the drive voltage output terminal of the drive sub-circuit, or the resistor is coupled to a wire of the drive voltage output terminal, and a sum of the wire resistance of the trace between the resistor and the corresponding display region and a resistance of the resistor is a set value or is in a set value range. 
     
     
       5. The drive circuit according to  claim 1 , wherein the compensation sub-circuit comprises:
 a first switch, wherein a control terminal and an input terminal of the first switch serve as a drive control signal input terminal and a data input terminal of the drive sub-circuit respectively; 
 a second switch, wherein an output terminal of the second switch is coupled to the plurality of compensation sub-circuits; and 
 a capacitor, wherein one terminal of the capacitor is coupled to an input terminal of the second switch to serve as a drive voltage output terminal of the drive sub-circuit, and the other terminal of the capacitor is coupled to an output terminal of the first switch and a control terminal of the second switch; 
 wherein a voltage of the drive voltage output terminal of each compensation sub-circuit is determined based on the wire resistance of the corresponding trace. 
 
     
     
       6. A display device, comprising a display panel and a drive circuit, wherein the display panel comprises a plurality of display regions, and each of the plurality of display regions is coupled to the drive circuit through one single trace, the drive circuit comprises a plurality of compensation sub-circuits, the plurality of compensation sub-circuits are coupled to the plurality of display regions in a one-to-one corresponding manner through traces and configured to output, to the corresponding display regions through the traces, voltages determined based on wire resistances of the traces;
 wherein the plurality of display regions have a same width in the arrangement direction from the display panel to the drive circuit, the wire resistance of the trace between the display region which is closest to the drive circuit, and the corresponding compensation sub-circuit is R 1 , and the voltage outputted by the compensation sub-circuit corresponding to a n-th display region in the arrangement direction is K n *n, wherein K n  is a first proportional coefficient that is corresponding to the n-th display region and related to R 1 ; and 
 wherein the drive circuit further comprises a drive sub-circuit, each compensation sub-circuit comprises: a resistor, coupled between the corresponding display region and a drive voltage output terminal of the drive sub-circuit; and a resistance of the resistor is X*Rn/I, wherein X is a second proportional coefficient related to R, Rn is a wire resistance value corresponding to the n-th display region sequentially arranged in a direction away from the drive circuit, and I is a current flowing through the resistor. 
 
     
     
       7. The display device according to  claim 6 , wherein the plurality of display regions are sequentially arranged in an arrangement direction from the display panel to the drive circuit; and
 the voltages outputted by the plurality of compensation sub-circuits to the plurality of display regions decrease gradually along the arrangement direction from the display panel to the drive circuit. 
 
     
     
       8. The display device according to  claim 6 , wherein the drive sub-circuit comprises:
 a first switch, wherein a control terminal and an input terminal of the first switch serve as a drive control signal input terminal and a data input terminal of the drive sub-circuit respectively; 
 a second switch, wherein an output terminal of the second switch is coupled to the plurality of compensation sub-circuits; and 
 a capacitor, wherein one terminal of the capacitor is coupled to an input terminal of the second switch to serve as a drive voltage output terminal of the drive sub-circuit, and the other terminal of the capacitor is coupled to an output terminal of the first switch and a control terminal of the second switch. 
 
     
     
       9. The display device according to  claim 8 , wherein wherein one terminal of the resistor is coupled to the corresponding display region, and the other terminal of the resistor is coupled to the drive voltage output terminal of the drive sub-circuit, or the resistor is coupled to a wire of the drive voltage output terminal, and a sum of the wire resistance of the trace between the resistor and the corresponding display region and a resistance of the resistor is a set value or is in a set value range. 
     
     
       10. The display device according to  claim 6 , wherein the compensation sub-circuit comprises:
 a first switch, wherein a control terminal and an input terminal of the first switch serve as a drive control signal input terminal and a data input terminal of the drive sub-circuit respectively; 
 a second switch, wherein an output terminal of the second switch is coupled to the plurality of compensation sub-circuits; and 
 a capacitor, wherein one terminal of the capacitor is coupled to an input terminal of the second switch to serve as a drive voltage output terminal of the drive sub-circuit, and the other terminal of the capacitor is coupled to an output terminal of the first switch and a control terminal of the second switch; 
 wherein a voltage of the drive voltage output terminal of each compensation sub-circuit is determined based on the wire resistance of the corresponding trace. 
 
     
     
       11. A debugging method for a display device, wherein the display device comprises a display panel and a drive circuit, the display panel comprises a plurality of display regions, and each of the plurality of display regions is coupled to the drive circuit through one single trace, the drive circuit comprises a plurality of compensation sub-circuits, and the plurality of compensation sub-circuits are coupled to the plurality of display regions in a one-to-one corresponding manner through traces, the plurality of display regions have a same width in the arrangement direction from the display panel to the drive circuit, the wire resistance of the trace between the display region which is closest to the drive circuit, and the corresponding compensation sub-circuit is R 1 , and the voltage outputted by the compensation sub-circuit corresponding to a n-th display region in the arrangement direction is K n *n, wherein K n  is a first proportional coefficient that is corresponding to the n-th display region and related to R 1 ; the drive circuit further comprises a drive sub-circuit, each compensation sub-circuit comprises: a resistor, coupled between the corresponding display region and a drive voltage output terminal of the drive sub-circuit; and a resistance of the resistor is X*Rn/I, wherein X is a second proportional coefficient related to R, Rn is a wire resistance value corresponding to the n-th display region sequentially arranged in a direction away from the drive circuit, and I is a current flowing through the resistor; and the debugging method comprises:
 obtaining wire resistance parameters, wherein the wire resistance parameters comprise wire resistance values of the traces or proportional coefficients having a set correlation with the wire resistance values; 
 generating output voltages corresponding to the traces according to the wire resistance parameters; and 
 debugging outputs of the corresponding compensation sub-circuits according to the output voltages corresponding to the traces.